Catnip Toxic?

Updated 2026-03-06| 5 min read| 1,039 found this helpful

Catnip is confirmed toxic to cats, while its toxicity status for dogs and horses is currently unknown

Its primary active toxic principle per ASPCA data is the compound nepetalactone

Cat reactions to exposure vary, with common effects including vomiting, diarrhea, sedation, or hyperactivity

FAQ

Is Catnip toxic to Humans?

No reported toxic effects; considered safe for human use in small, appropriate quantities (Non-toxic)

Is Catnip toxic to Cats?

Vomiting, diarrhea, sedation, or overstimulation depending on individual cat sensitivity and exposure volume (Low)

Is Catnip toxic to Dogs?

No confirmed clinical toxicity data available; monitor for unusual gastrointestinal or behavioral symptoms if ingested (Unknown)

Is Catnip toxic to Horses?

No confirmed clinical toxicity data available; monitor for unusual gastrointestinal or behavioral symptoms if ingested (Unknown)

Not sure which plant? Snap a photo to ID in 1 secondGet App

Toxicity Details

Humans

Non-toxic

No reported toxic effects; considered safe for human use in small, appropriate quantities

Cats

Low

Vomiting, diarrhea, sedation, or overstimulation depending on individual cat sensitivity and exposure volume

Dogs

Unknown

No confirmed clinical toxicity data available; monitor for unusual gastrointestinal or behavioral symptoms if ingested

Horses

Unknown

No confirmed clinical toxicity data available; monitor for unusual gastrointestinal or behavioral symptoms if ingested

Toxicity Snapshot

Toxic PartsAll aerial plant parts (leaves, stems, flowers) contain active nepetalactone compounds

Exposure RouteIngestion of fresh or dried plant material, inhalation of dried plant particles

Toxic CompoundsNepetalactone

First Aid & Prevention

First 30 Minutes

• Immediately remove all remaining catnip from the exposed animal's access to prevent further consumption
• If ingestion occurred within 10 minutes, only induce vomiting if explicitly directed by a veterinary professional
• Monitor the animal for unusual behavior, vomiting, or diarrhea for 2 to 4 hours after exposure

Contact Vet Immediately

• Vomiting or diarrhea persists for more than 2 hours post-exposure
• The animal shows extreme unresponsiveness, severe hyperactivity, or respiratory distress
• A very large volume of catnip was ingested by a young, elderly, or immunocompromised animal

Prevention

• Store catnip products out of reach of unsupervised cats with a history of adverse reactions to the plant
• Avoid offering large quantities of catnip to cats even if they appear to enjoy the plant
• Keep unidentifiable Lamiaceae family plants away from all companion animals to prevent accidental ingestion

Treatment & Prognosis

• Supportive care including fluid therapy to address dehydration from repeated vomiting or diarrhea
• Symptomatic management of overstimulation or excessive sedation as prescribed by a veterinarian
• No specific antidote exists, all care is targeted to the clinical signs the animal presents with

Emergency? Open PlantFun for real-time AI guidanceGet App

Professional Toxicology

Scientific NameNepeta cataria

AliasesCatswort、Catmint

Toxicity Grade

HumansNon-toxic

CatsLow

DogsUnknown

HorsesUnknown

Target Organs

Gastrointestinal tractCentral nervous system

Mechanism of Action

• Nepetalactone binds to specialized olfactory receptors in cats to trigger characteristic behavioral changes

• Ingestion of large quantities irritates the gastrointestinal mucosal lining, leading to vomiting and diarrhea

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Small companion mammals (rabbits, guinea pigs, hamsters): No confirmed toxicity data available, but ingestion of large volumes may cause mild gastrointestinal distress

Ruminants (cattle, sheep, goats): Toxicity not reported in grazing settings, but excessive consumption of dried concentrated catnip may lead to digestive disturbances

Confusion Risk

The following plants look similar and may be confused:

Peppermint Mentha piperita

Visually similar due to shared Lamiaceae family square stems and serrated oval leaves; peppermint has a sharp, distinct menthol scent when crushed, while catnip has a mild, earthy aroma

Lemon Balm Melissa officinalis

Shares small clustered white/pale purple flowers and textured serrated leaves with catnip; lemon balm emits a strong citrus scent when crushed, unlike the neutral, herbaceous scent of catnip

Use PlantFun to scan and avoid misidentificationGet App

Related Toxic Plants

Pennyroyal

Mentha pulegium

Highly toxic, can cause fatal liver failure in cats and dogs even in small doses

Perilla Mint

Perilla frutescens

Severely toxic, causes acute respiratory distress and organ necrosis in horses, cattle, and companion animals

Common Lavender

Lavandula angustifolia

Low toxicity, can cause mild gastrointestinal upset and sedation in cats and dogs if ingested in large quantities

Download PlantFun App

Identify, grow and care for plants effectively!

Instant Plant ID

Take a photo to quickly identify plants.

Smart Care Reminders

Generate watering and care schedules.

Toxicity & Disease Diagnosis

Identify toxic plants and pests with treatment advice.

Data Sources

1. ASPCA Animal Poison Control

This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.